Bird Walk Free Lakeside Park bird walks the fourth Wednesday of each month. Lead by knowledgable and experienced Audubon guides. Meet at geodesic dome near the Nature Center, August 23, 9:30 a.m.. Birding list in Birds.

Lake Merritt Weed Warriors are a volunteer group that helps the city maintain and improve the lakeside grounds. Meet the last Saturday of the month. Next up, August 26, 9 - 12. Site to be announced. Contact: info@lakemerrittweedwarriors.org

​Lake Merritt Joggers & Striders, the oldest running club of the East Bay, founded in 1977, sponsors a 4th Sunday race each month at 9:00 a.m. Runners and volunteers welcomed. Meet near the Sailboat House in Lakeside Park. Info at LMJS. August 27.

Volunteer Gardening at Lake MerrittThe Gardens at Lake Merritt are open daily 8:00 to 5:30.Current workday volunteer offerings for individuals and small groups are: First Saturday of the month in Mediterranean, Edible and Succulent Gardens, 9:30 a.m. – 12:30; Third Saturday of the month in Edible and Sensory Gardens, 9:30 - 12:30. Contact gardensatlakemerritt

Friday Nights at Oakland Museum of California / Lake Merritt. Every Friday, 5–9 pm... Off the Grid food trucks, music, and more! Join OMCA every Friday for a family-friendly take on a festive night market, with the best in Bay Area curbside cuisine from gourmet food trucks, local beer, wine, and non-alcoholic beverages at the Blue Oak beer garden, live music, and dance lessons...and enjoy guest performers and events.

ALGAE... grows in large quantities during the spring and early summer, but only in the shoreline area where depths are four feet or less. Although a very beneficial part of the food chain, it becomes a nuisance when there is too much of it, causing odors and depleting oxygen levels when it decays. Algae is kept in check by removal with the harvester boat. .... several types of algae grow vigorously in the shallow waters. Most common are light green filaments of Cladophora and Enteromorpha, along with the darker green sea lettuce (Ulva). This growth is limited to 20 - 25 feet of the shoreline where the water is only zero to four feet deep. At greater depths, light penetration is not sufficient for growth. By mid-May, algae may cover the entire shoreline area out to deeper water, blanketing the area in bright green where only murkywater existed just a month before. Towers of algae billow up, providing both shelter and food for both fish and invertebrates...." excerpt from A Year In The Life of Lake Merritt, by Lake Merritt Institute, copyright 2002.